Plate thickness detection device

Abstract

The utility model relates to the field of thickness detection, in particular to a thickness detection device for a veneer, an artificial board and an engineering structure board, which comprises a placement plane for placing a board to be detected; the measuring piece is located above the placement plane, and the measuring piece comprises a measuring part capable of vertically moving; the operating piece is connected with the measuring part and used for controlling the measuring part to move in the vertical direction; the information acquisition assembly is in communication connection with the measuring piece and is used for collecting the thickness information measured by the measuring piece; compared with the prior art, the plate thickness detection device is simple to operate, convenient to test, reliable in data, economical and feasible.

Description

Technical Field

[0001] The utility model relates to the field of thickness detection, in particular to a thickness detection device for single boards, artificial boards and engineering structure boards. Background Art

[0002] With the development of social economy, my country's demand for wood consumption has increased dramatically. In addition, my country has introduced natural forest protection projects to restrict the felling of wood, and the annual import volume of logs is huge. At present, the most used is fast-growing forests, which have a short period of growth, but low quality, large dimensional deviation after processing, and poor stability. Plywood and veneer laminated wood are structural or decorative panels made of peeled veneers as units through layered structure reorganization, gluing and hot pressing, while cross-laminated timber (CLT) and glulam are prefabricated structural panels or components made of sawn timber as units through grading, surface processing, paving, gluing and pressing. In order to ensure the quality of the final product, the wood veneer or sawn timber must be graded, that is, the quality of the wood veneer or sawn timber, including thickness, must be measured to prepare structural or decorative materials that meet the use requirements, so as to save wood resources. A key indicator in grading is the thickness deviation of the wood unit. The thickness deviation affects the physical and mechanical properties of the wood to a certain extent and reflects the quality of the wood unit. Therefore, the accurate measurement of the thickness of the wood unit is very critical. In addition, my country is the world's largest producer of wood-based panels, with dozens of varieties including particleboard, oriented strand board, medium-density fiberboard, plywood, blockboard, etc. In the manufacturing process of wood-based panels, due to the influence of many factors such as raw materials, processes and equipment, the thickness of the whole board usually varies greatly, and quality control is also very important. However, usually, due to the influence of the format size, conventional measuring tools such as vernier calipers and micrometers cannot measure the thickness of the middle part of the wood-based panel, thus affecting the quality control of the wood-based panel.

[0003] The thickness of the wood unit is measured by measuring the thickness at multiple points on the edge and the middle, and calculating the average value to obtain the thickness value and mean square error. At present, GB / T 13010-2020 and GB / T19367-2009 are commonly recommended for the thickness measurement methods of veneers and wood-based panels in China. Due to the influence of log quality, knives, peeling parameters, and differences in the properties of edge and core materials during peeling of veneers, the thickness of peeled or sliced ​​wood veneers has dimensional deviations, which leads to thickness differences in the processing of wood-based panels. The above two measurement standards do not specify the thickness of the middle part. In the actual measurement process, the middle part with a large amplitude of the board surface is difficult to detect due to the limitation of the measuring tools. The vast majority of domestic colleges, scientific research enterprises, and factories do not have the conditions and financial resources to match the imported advanced wood thickness measurement equipment, resulting in inaccurate measurement results and the existence of product differences, which has seriously affected the technological progress of my country's veneer and wood-based panel industries. Therefore, it is very timely and necessary to invent a thickness testing method and device that is simple to operate, convenient to test, and economical, accurate, and feasible in the processing of veneers, wood-based panels, and other panel industries. Utility Model Content

[0004] In order to overcome the above defects of the prior art, the present invention provides a plate thickness detection device, which can accurately measure the thickness of single board, artificial board and engineering structure board at each position, has a simple structure, is easy to operate, and has accurate measurement results.

[0005] The utility model provides a plate thickness detection device, comprising:

[0006] Placement plane, which is used to place the plate to be tested

[0007] A measuring member, which is located above the placement plane and includes a measuring portion that can move vertically;

[0008] An operating member connected to the measuring part and used for controlling the measuring part to move in a vertical direction;

[0009] The information collection component is connected to the measuring piece for communication and is used to collect thickness information measured by the measuring piece.

[0010] Compared with the prior art, the plate thickness detection device of the utility model has the following advantages: the measuring part is operated by an operating member to sense the pressure change or displacement change of the contact point between the measuring part and the plate, thereby calculating the thickness of the plate, and the vertical movement ability of the measuring part enables it to adapt to plates of different thicknesses to ensure the accuracy of the measurement, and the information acquisition component is responsible for receiving the signal from the measuring part and converting it into readable data, so that the measurement results can be collected and recorded in real time.

[0011] Furthermore, the measuring member includes a displacement sensor, the displacement sensor includes a detection body and a measuring part, the measuring part includes a measuring probe disposed on the detection body and movable in the vertical direction, and the detection body is fixedly connected to the placement plane. In this structure, the detection body serves as the base of the displacement sensor, which is fixedly connected to the placement plane to provide a stable installation position for the entire sensor, and the measuring probe is designed to be movable in the vertical direction, which means that it can adapt to plates of different thicknesses, and can respond to changes in the height of the plate surface when contacting the plate surface to generate a displacement signal.

[0012] Furthermore, a connecting bracket is fixedly arranged on the placement plane, and the detection body is fixed on the connecting bracket. In this structure, the connecting bracket provides additional support for the detection body, ensuring that it will not be offset or vibrated due to external forces during operation, which is crucial for high-precision measurement. At the same time, by accurately adjusting the position of the connecting bracket, it can be ensured that the measurement probe is aligned with the plate or other target object to be measured, thereby improving the accuracy and consistency of the measurement.

[0013] Furthermore, the connecting bracket includes a vertical rod fixedly arranged on the placement plane, a horizontal rod is vertically arranged on the vertical rod, and the detection body is arranged on the horizontal rod. In this structure, the combination of the vertical rod and the horizontal rod forms a stable "T"-shaped structure, which greatly enhances the stability of the entire detection device. At the same time, by adjusting the position and angle of the horizontal rod, it can easily adapt to plates of different sizes and shapes, thereby improving the versatility and scope of application of the device.

[0014] Furthermore, the operating member includes a pneumatic foot valve switch, one end of which is ventilated to the measuring probe, and the other end of which is ventilated to the air pump. In this structure, the pneumatic foot valve switch is further turned on by turning on the air pump, and after the pneumatic foot valve switch is turned on, the measuring probe is controlled to extend downward to the measuring point under the action of air pressure, which is simple to operate.

[0015] Furthermore, an air pressure regulating valve is provided between the pneumatic foot valve switch and the measuring probe, and the air pressure regulating valve is ventilatedly connected to the measuring probe and the pneumatic foot valve switch, respectively. In this structure, the air pressure regulating valve can reduce the high-pressure gas from the air pump to a lower and stable output pressure. At the same time, even if the input pressure fluctuates, the air pressure regulating valve can maintain the stability of the output pressure, which ensures that no matter how the pressure of the air pump changes, the measuring probe and the pneumatic foot valve switch can work under consistent conditions, thereby improving the measurement accuracy and consistency of the system response. Therefore, by providing an air pressure regulating valve between the pneumatic foot valve switch and the measuring probe, it can ensure that the entire system operates under optimal pressure conditions, which not only improves the efficiency and safety of the system, but also ensures the accuracy of the measurement and the life of the equipment.

[0016] Furthermore, the information collection component includes a display, and the display is communicatively connected with the measuring member. In this structure, the display can display the data collected by the measuring member in real time, which is convenient for recording.

[0017] Furthermore, it also includes an information storage device, which is in communication connection with the display. In this structure, the information storage device can record and save the data collected by the measuring device for a long time, whether it is a parameter monitored in real time or a record triggered by a specific event, which can be safely stored, which is very useful for subsequent data analysis, fault diagnosis, performance evaluation, etc.

[0018] Other improved features and advantages of the utility model will be described in the subsequent specific embodiments, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be achieved and obtained through the structures specifically pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of the plate thickness detection device of the utility model;

[0020] Figure 2 Schematic diagram of the detection sites of the wooden board to be tested.

[0021] Description of reference numerals:

[0022] 1. Placement plane, 200. Detection body, 201. Measuring probe, 301. Vertical rod, 302. Horizontal rod, 4. Pneumatic foot valve switch, 5. Air pump, 6. Air pressure regulating valve, 7. Display, 8. Information storage device, 9. Wooden board to be tested. DETAILED DESCRIPTION

[0023] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0024] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "fixed" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances. The present application is further described in detail below in conjunction with the drawings and specific embodiments.

[0025] See also Figure 1 As shown, an embodiment of the present application discloses a plate thickness detection device, including a placement plane 1 for placing a plate to be detected, a measuring piece for measuring the thickness, an operating piece for controlling the measuring piece, and an information acquisition component for data collection. The specific structure is described below.

[0026] Specifically, the measuring part includes a displacement sensor, which includes a detection body 200 and a measuring part. The measuring part includes a measuring probe 201 that is arranged on the detection body 200 and can move in the vertical direction. The detection body 200 is fixedly connected to the placement plane 1, wherein the detection body 200 contains an electronic circuit and a signal processing unit for receiving and processing the signal sent by the measuring probe 201. The measuring probe 201 is the active part of the displacement sensor, which can move in the vertical direction. The probe is usually made of conductive material, can emit or reflect signals (such as electromagnetic waves or sound waves), and interact with the sensing element on the detection body 200 to generate a signal reflecting the position change.

[0027] In a specific implementation environment, the surface of the placement plane 1 needs to be clean and free of impurities to reduce detection errors.

[0028] In this embodiment, the fixation of the detection body 200 and the placement plane 1 is achieved through a connecting bracket. The placement plane is fixedly provided with a connecting bracket, and the detection body 200 is fixed on the connecting bracket. Directly fixing the detection body 200 on the placement plane 1 may be affected by the unevenness or unstable factors of the plane itself, such as ground vibration, temperature changes, etc. The use of the connecting bracket can isolate these external interferences and provide a more stable fixing point, thereby improving the measurement accuracy.

[0029] More specifically, the connecting bracket includes a vertical rod 301 fixedly set on the placement plane 1, and a horizontal rod 302 is vertically arranged on the vertical rod 301, and the detection body 200 is set on the horizontal rod 302. The design of the vertical rod 301 and the horizontal rod 302 allows the detection body 200 to be accurately positioned in three-dimensional space. The vertical rod 301 provides height adjustment capability, while the horizontal rod 302 allows fine-tuning of the position on the horizontal plane, ensuring that the detection body 200 can be accurately aligned with the measurement target.

[0030] Secondly, regarding the specific fixing method between the detection body 200 and the horizontal rod 302, a clamp can be used. The clamp design usually allows the user to quickly install and remove the detection body 200, which is very useful when frequent adjustment of the measurement position or maintenance is required. As a fallback method, screw connection can be considered.

[0031] In addition, the operating member includes a pneumatic foot valve switch 4, one end of which is ventilatedly connected to the measuring probe 201, and the other end of which is ventilatedly connected to the air pump 5. The pneumatic foot valve switch 4 is a pneumatic component controlled by the operator's foot. When the operator steps on the foot, the valve opens to allow gas to flow; when the operator releases the foot, the valve closes to prevent gas from flowing.

[0032] In the above structure, when dealing with specific application scenarios, the pneumatic foot valve switch 4 is usually designed to be two-position or three-position, five-way or four-way to control different paths and flow rates of the airflow.

[0033] In addition, an air pressure regulating valve 6 may be further provided between the pneumatic foot valve switch 4 and the measuring probe 201, and the air pressure regulating valve 6 is respectively connected to the measuring probe 201 and the pneumatic foot valve switch 4. By providing the air pressure regulating valve 6 between the pneumatic foot valve switch 4 and the measuring probe 201, the performance of the pneumatic control system can be significantly improved, the accuracy of the measurement and the safety of the equipment can be ensured, and the energy saving effect can be achieved. In practical applications, it is not enough to open and close the flow only through the pneumatic foot valve switch 4, and the air pressure regulating valve 6 is also required to accurately guide the extension distance of the measuring probe.

[0034] In the above structure, specifically, the air pressure regulating valve 6 is first opened and the pressure is adjusted, and the pneumatic foot valve switch 4 is controlled to make the measuring probe 201 of the displacement sensor work, and the measuring probe 201 extends to the measuring point under the action of the gas pressure.

[0035] In this embodiment, preferably, the information acquisition component may include a display 7 and an information storage device 8, wherein the display 7 is communicatively connected to the measuring probe 201, and the information storage device 8 is communicatively connected to the display 7. The display 7 and the information storage device 8 together constitute the core of the information acquisition component, and they work together to not only provide real-time data visualization, but also ensure long-term preservation and traceability of data.

[0036] In a specific application scenario, the information storage device 8 may be a computer, a hard disk, a flash memory, a cloud storage service, etc.

[0037] See also Figure 2 When measuring thickness, the nine-point sampling method can generally be used to test the thickness of veneer or artificial board. The position between 20-50mm from the edge of the board is selected for measurement. The nine points correspond to the four middle points of the four sides, four points on the diagonal, and one point in the center of the diagonal. The measurement accuracy can be accurate to 0.01mm.

[0038] In addition, the location of the above-mentioned loading points should be selected to avoid defects such as cracks, knots, and worm holes.

[0039] The detection steps of the thickness detection device of this embodiment are as follows: place the wooden board 9 to be tested on the placement platform, with the measured position facing the center of the measuring probe 201, turn on and debug the displacement sensor, turn on the air pump 5, turn on the air pressure regulating valve 6 and debug the pressure, control the pneumatic foot valve switch 4 to make the measuring probe 201 of the displacement sensor work, and the measuring probe 201 extends to the measuring point under the action of the gas pressure. The display 7 displays the data and transmits the measured data to the information storage device 8 through the collector, release the pneumatic foot valve switch 4 to cut off the output gas, and then it rebounds to the inside of the detector, and the measurement is completed.

[0040] In specific application scenarios, the loading pressure is 0.2-0.4MPa, the loading time is completed within 2-3s, and then the pressure is released.

[0041] Furthermore, the loading speed is 300-400 mm / s, and the speed is positively correlated with the pressure.

[0042] Furthermore, the thickness range of the thickness detection device of the present application is ≤200mm and can be accurate to 0.01mm.

[0043] In the description of the present application, the description with reference to the terms "present embodiment", "some embodiments", etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradicting each other.

[0044] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A plate thickness detection device, characterized in that: include: A placement plane (1) for placing the plate to be tested; A measuring member, which is located above the placement plane (1) and includes a measuring portion that can move vertically; An operating member connected to the measuring part and used for controlling the measuring part to move in a vertical direction; The information collection component is connected to the measuring piece for communication and is used to collect thickness information measured by the measuring piece.

2. The plate thickness detection device according to claim 1, characterized in that: The measuring member comprises a displacement sensor, the displacement sensor comprises a detection body (200) and a measuring part, the measuring part comprises a measuring probe (201) arranged on the detection body (200) and movable in a vertical direction, and the detection body (200) is fixedly connected to a placement plane (1).

3. The plate thickness detection device according to claim 2, characterized in that: A connecting bracket is fixedly arranged on the placement plane (1), and the detection body (200) is fixed on the connecting bracket.

4. The plate thickness detection device according to claim 3, characterized in that: The connecting bracket comprises a vertical rod (301) fixedly arranged on a placement plane (1), a horizontal rod (302) is vertically arranged on the vertical rod (301), and the detection body (200) is arranged on the horizontal rod (302).

5. The plate thickness detection device according to claim 2, characterized in that: The operating member comprises a pneumatic foot valve switch (4), one end of the pneumatic foot valve switch (4) is ventilatedly connected to the measuring probe (201), and the other end of the pneumatic foot valve switch (4) is ventilatedly connected to an air pump (5).

6. The plate thickness detection device according to claim 5, characterized in that: An air pressure regulating valve (6) is also provided between the pneumatic foot valve switch (4) and the displacement sensor, and the air pressure regulating valve (6) is respectively ventilatedly connected to the measuring probe (201) and the pneumatic foot valve switch (4).

7. The plate thickness detection device according to claim 1, characterized in that: The information collection component comprises a display (7), and the display (7) is communicatively connected with the measuring element.

8. The plate thickness detection device according to claim 7, characterized in that: It also includes an information storage device (8), which is communicatively connected to the display (7).

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